Pia tugged on the zipper at the back of Katie's dress, pulling it down from shoulder blades down to her hips. The dress fell quietly to the floor, leaving Katie in her lingerie and heels.
Pia motioned to Katie to sit up on the counter, and as Katie moved into position Pia untied the knot in her top. She removed her blouse and bra and pulled Katie's head to her breasts. Katie licked one of Pia's nipples, while pinching and rolling the other. Pia moaned and sighed at Katie's attention, letting her head fall back to enjoy the sensations.
Pia stepped closer while Katie's head was at Pia's breast and tugged at Katie's panty waistband. Katie broke off from Pia and wiggled her hips, giggling as her panties were peeled away and down her legs until they were left hanging from one foot. Pia pushed Katie back so she was laying against the mirror, bracing herself with her hands on the counter.
Pia kissed between Katie's breasts and pulled her bra down so she could reach Katie's hardened nipples. Pia squeezed and pawed at Katie's tits, causing the blonde intern to moan "Yes!" Pia's hand trailed down Katie's stomach and her hips beginning to rock, yearning for the touch of Pia's fingers in her hot, needy pussy.
Pia responded to Katie's signal and planted kisses across Katie's stomach as her lips and tongue slowly trailed lower and lower. Pia dragged lazy fingers outside Katie's pussy lips until the blonde couldn't take anymore and grabbed Pia's wrist, directing Pia's fingers right over her hole, desperate for her touch.
Pia's tongue lapped gently at Katie's clit, sending an electric shock through her. Katie moaned loudly, "Oh, yes! Don't stop! Don't stop!" as Pia's fingers rubbed at Katie's pussy lips, gently parting them and gliding inside. Katie was in ecstasy. As Pia licked and fucked her pussy, Katie was tugging at her own nipple, moaning and panting, feeling her orgasm build deep inside her.
"Faster! Faster!" cried Katie, so Pia licked and fingered her more frantically. As her tension rose, Katie let out a loud moan "OH GOOOODD!" as she came, grinding her pussy into Pia's face to take every bit of friction possible to prolong the pleasure. Pia broke off from Katie's sweet hole and kissed her mouth gently but eagerly, while grazing her fingers along her sides, slowly bringing her back down to earth as her orgasm subsided.
After the girls caught their breath, Pia put her bra back on and re-tied her top. Standing alongside Katie, she fixed her makeup and tidied her hair, making sure she was immaculate again, ready to return to the office.
Winking at Katie on the way out of the bathroom, Pia said, "Now, am I the office slut? I think you have your answer!"